I’m clearly missing a video or picture or something, and I do mean missing: seals screwing sounds hilarious. I don’t have the content error message like @5, just what looks like a post consisting only of:

Glen Davidson has it right: cats having sex are neither cute nor graceful. And for the female, it’s evidently painful as the barbs on the male’s penis stimulate her vaginal wall when he withdraws, triggering ovulation.

Somewhere on the web there’s a photo of two lions, taken just as the male has withdrawn; the female (like all cats, it seems) is turning around and giving him a nasty swat. Unfortunately, a search of Google images for “lions mating” doesn’t turn up this particular photo, but it shows lots of open mouths: one gathers lions, like house cats, make a lot of noise when doin’ the dirty.

Lets not compare this to cats. Cats’ sex is definitely painful, but it looks like the females like it (except for the withdrawal, when they try to kill the male) – after copulation female cats often roll on their backs on the grass (a clear sign that they’re having fun).
Seals, on the other hand, are rapists. They even rape their young, something I’ve never seen a cat do.